Samsung SCX-4521F, Laser, 600 x 600 DPI, Mono scanning, Mono faxing, A4, White Samsung SCX-4521F. Print technology: Laser, Maximum resolution: 600 x 600 DPI. Maximum copy resolution: 600 x 600 DPI. Scanning: Mono scanning, Optical scanning resolution: 600 x 600 DPI. Faxing: Mono faxing. Maximum ISO A-series paper size: A4. Product color: White